/*
* Copyright 1999-2012 Alibaba Group.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.cobar.manager.response;
import java.nio.ByteBuffer;
import com.alibaba.cobar.CobarServer;
import com.alibaba.cobar.config.Fields;
import com.alibaba.cobar.manager.ManagerConnection;
import com.alibaba.cobar.mysql.PacketUtil;
import com.alibaba.cobar.net.mysql.EOFPacket;
import com.alibaba.cobar.net.mysql.FieldPacket;
import com.alibaba.cobar.net.mysql.ResultSetHeaderPacket;
import com.alibaba.cobar.net.mysql.RowDataPacket;
import com.alibaba.cobar.util.FormatUtil;
import com.alibaba.cobar.util.LongUtil;
import com.alibaba.cobar.util.StringUtil;
import com.alibaba.cobar.util.TimeUtil;
/**
* 服务器状态报告
*
* @author xianmao.hexm 2010-1-25 下午01:11:00
* @author wenfeng.cenwf 2011-4-25
*/
public final class ShowServer {
private static final int FIELD_COUNT = 8;
private static final ResultSetHeaderPacket header = PacketUtil.getHeader(FIELD_COUNT);
private static final FieldPacket[] fields = new FieldPacket[FIELD_COUNT];
private static final EOFPacket eof = new EOFPacket();
static {
int i = 0;
byte packetId = 0;
header.packetId = ++packetId;
fields[i] = PacketUtil.getField("UPTIME", Fields.FIELD_TYPE_VAR_STRING);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("USED_MEMORY", Fields.FIELD_TYPE_LONGLONG);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("TOTAL_MEMORY", Fields.FIELD_TYPE_LONGLONG);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("MAX_MEMORY", Fields.FIELD_TYPE_LONGLONG);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("RELOAD_TIME", Fields.FIELD_TYPE_LONGLONG);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("ROLLBACK_TIME", Fields.FIELD_TYPE_LONGLONG);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("CHARSET", Fields.FIELD_TYPE_VAR_STRING);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("STATUS", Fields.FIELD_TYPE_VAR_STRING);
fields[i++].packetId = ++packetId;
eof.packetId = ++packetId;
}
public static void execute(ManagerConnection c) {
ByteBuffer buffer = c.allocate();
// write header
buffer = header.write(buffer, c);
// write fields
for (FieldPacket field : fields) {
buffer = field.write(buffer, c);
}
// write eof
buffer = eof.write(buffer, c);
// write rows
byte packetId = eof.packetId;
RowDataPacket row = getRow(c.getCharset());
row.packetId = ++packetId;
buffer = row.write(buffer, c);
// write last eof
EOFPacket lastEof = new EOFPacket();
lastEof.packetId = ++packetId;
buffer = lastEof.write(buffer, c);
// write buffer
c.write(buffer);
}
private static RowDataPacket getRow(String charset) {
CobarServer server = CobarServer.getInstance();
long startupTime = server.getStartupTime();
long now = TimeUtil.currentTimeMillis();
long uptime = now - startupTime;
Runtime rt = Runtime.getRuntime();
long total = rt.totalMemory();
long max = rt.maxMemory();
long used = (total - rt.freeMemory());
RowDataPacket row = new RowDataPacket(FIELD_COUNT);
row.add(StringUtil.encode(FormatUtil.formatTime(uptime, 3), charset));
row.add(LongUtil.toBytes(used));
row.add(LongUtil.toBytes(total));
row.add(LongUtil.toBytes(max));
row.add(LongUtil.toBytes(server.getConfig().getReloadTime()));
row.add(LongUtil.toBytes(server.getConfig().getRollbackTime()));
row.add(StringUtil.encode(charset, charset));
row.add(StringUtil.encode(CobarServer.getInstance().isOnline() ? "ON" : "OFF", charset));
return row;
}
}